US Patent: 1,842,425
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| Feed Mechanism for Machine Tools
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Patentees:
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| Harry L. Rambo (exact or similar names) - Cincinnati, Hamilton County, OH |
| Thomas Addison (exact or similar names) - Cincinnati, Hamilton County, OH |
| George Langen (exact or similar names) - Cincinnati, Hamilton County, OH |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Aug. 05, 1925 |
| Granted: |
Jan. 26, 1932 |
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Joel Havens
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